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from webob import Response
from zope.interface import implements
from chameleon.core.template import TemplateFile
from chameleon.zpt.language import Parser
from repoze.bfg.interfaces import IResponseFactory
from repoze.bfg.interfaces import ITemplateRenderer
from repoze.bfg.renderers import template_renderer_factory
from repoze.bfg.settings import get_settings
from repoze.bfg.threadlocal import get_current_registry
class TextTemplateFile(TemplateFile):
default_parser = Parser()
def __init__(self, filename, parser=None, format='text', doctype=None,
**kwargs):
if parser is None:
parser = self.default_parser
super(TextTemplateFile, self).__init__(filename, parser, format,
doctype, **kwargs)
def renderer_factory(path):
return template_renderer_factory(path, TextTemplateRenderer)
class TextTemplateRenderer(object):
implements(ITemplateRenderer)
def __init__(self, path):
settings = get_settings()
auto_reload = settings and settings['reload_templates']
self.template = TextTemplateFile(path, auto_reload=auto_reload)
def implementation(self):
return self.template
def __call__(self, value, system):
try:
system.update(value)
except (TypeError, ValueError):
raise ValueError('renderer was passed non-dictionary as value')
result = self.template(**system)
return result
def get_renderer(path):
""" Return a callable ``ITemplateRenderer`` object representing a
``Chameleon`` text template at the package-relative path (may also
be absolute)."""
return renderer_factory(path)
def get_template(path):
""" Return a ``Chameleon`` text template at the package-relative
path (may also be absolute)."""
renderer = renderer_factory(path)
return renderer.implementation()
def render_template(path, **kw):
""" Render a ``chameleon`` text template at the package-relative
path (may also be absolute) using the kwargs in ``*kw`` as
top-level names and return a string."""
renderer = renderer_factory(path)
return renderer(kw, {})
def render_template_to_response(path, **kw):
""" Render a ``chameleon`` text template at the package-relative
path (may also be absolute) using the kwargs in ``*kw`` as
top-level names and return a Response object with the body as the
template result."""
renderer = renderer_factory(path)
result = renderer(kw, {})
reg = get_current_registry()
response_factory = reg.queryUtility(IResponseFactory, default=Response)
return response_factory(result)
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